/*
 * Copyright (c) 2007-2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2001-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: ToTextSAXHandler.java,v 1.3 2005/09/28 13:49:08 pvedula Exp $
 */
package com.sun.org.apache.xml.internal.serializer;

import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.util.Properties;

import org.w3c.dom.Node;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.ext.LexicalHandler;

/**
 * This class converts SAX-like event to SAX events for
 * xsl:output method "text".
 *
 * This class is only to be used internally. This class is not a public API.
 *
 * @xsl.usage internal
 */
public final class ToTextSAXHandler extends ToSAXHandler {
    /**
     * From XSLTC
     * @see ExtendedContentHandler#endElement(String)
     */
    public void endElement(String elemName) throws SAXException {
        if (m_tracer != null)
            super.fireEndElem(elemName);
    }

    /**
     * @see org.xml.sax.ContentHandler#endElement(String, String, String)
     */
    public void endElement(String arg0, String arg1, String arg2) throws SAXException {
        if (m_tracer != null)
            super.fireEndElem(arg2);
    }

    public ToTextSAXHandler(ContentHandler hdlr, LexicalHandler lex, String encoding) {
        super(hdlr, lex, encoding);
    }

    /**
    * From XSLTC
    */
    public ToTextSAXHandler(ContentHandler handler, String encoding) {
        super(handler, encoding);
    }

    public void comment(char ch[], int start, int length) throws org.xml.sax.SAXException {
        if (m_tracer != null)
            super.fireCommentEvent(ch, start, length);
    }

    public void comment(String data) throws org.xml.sax.SAXException {
        final int length = data.length();
        if (length > m_charsBuff.length) {
            m_charsBuff = new char[length * 2 + 1];
        }
        data.getChars(0, length, m_charsBuff, 0);
        comment(m_charsBuff, 0, length);
    }

    /**
     * @see Serializer#getOutputFormat()
     */
    public Properties getOutputFormat() {
        return null;
    }

    /**
     * @see Serializer#getOutputStream()
     */
    public OutputStream getOutputStream() {
        return null;
    }

    /**
     * @see Serializer#getWriter()
     */
    public Writer getWriter() {
        return null;
    }

    /**
     * Does nothing because
     * the indent attribute is ignored for text output.
     *
     */
    public void indent(int n) throws SAXException {
    }

    /**
     * @see Serializer#reset()
     */
    public boolean reset() {
        return false;
    }

    /**
     * @see DOMSerializer#serialize(Node)
     */
    public void serialize(Node node) throws IOException {
    }

    /**
     * @see SerializationHandler#setEscaping(boolean)
     */
    public boolean setEscaping(boolean escape) {
        return false;
    }

    /**
     * @see SerializationHandler#setIndent(boolean)
     */
    public void setIndent(boolean indent) {
    }

    /**
     * @see Serializer#setOutputFormat(Properties)
     */
    public void setOutputFormat(Properties format) {
    }

    /**
     * @see Serializer#setOutputStream(OutputStream)
     */
    public void setOutputStream(OutputStream output) {
    }

    /**
     * @see Serializer#setWriter(Writer)
     */
    public void setWriter(Writer writer) {
    }

    /**
     * @see ExtendedContentHandler#addAttribute(String, String, String, String, String)
     */
    public void addAttribute(String uri, String localName, String rawName, String type, String value, boolean XSLAttribute) {
    }

    /**
     * @see org.xml.sax.ext.DeclHandler#attributeDecl(String, String, String, String, String)
     */
    public void attributeDecl(String arg0, String arg1, String arg2, String arg3, String arg4) throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.DeclHandler#elementDecl(String, String)
     */
    public void elementDecl(String arg0, String arg1) throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.DeclHandler#externalEntityDecl(String, String, String)
     */
    public void externalEntityDecl(String arg0, String arg1, String arg2) throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.DeclHandler#internalEntityDecl(String, String)
     */
    public void internalEntityDecl(String arg0, String arg1) throws SAXException {
    }

    /**
     * @see org.xml.sax.ContentHandler#endPrefixMapping(String)
     */
    public void endPrefixMapping(String arg0) throws SAXException {
    }

    /**
     * @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int)
     */
    public void ignorableWhitespace(char[] arg0, int arg1, int arg2) throws SAXException {
    }

    /**
     * From XSLTC
     * @see org.xml.sax.ContentHandler#processingInstruction(String, String)
     */
    public void processingInstruction(String arg0, String arg1) throws SAXException {
        if (m_tracer != null)
            super.fireEscapingEvent(arg0, arg1);
    }

    /**
     * @see org.xml.sax.ContentHandler#setDocumentLocator(Locator)
     */
    public void setDocumentLocator(Locator arg0) {
        super.setDocumentLocator(arg0);
    }

    /**
     * @see org.xml.sax.ContentHandler#skippedEntity(String)
     */
    public void skippedEntity(String arg0) throws SAXException {
    }

    /**
     * @see org.xml.sax.ContentHandler#startElement(String, String, String, Attributes)
     */
    public void startElement(String arg0, String arg1, String arg2, Attributes arg3) throws SAXException {
        flushPending();
        super.startElement(arg0, arg1, arg2, arg3);
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#endCDATA()
     */
    public void endCDATA() throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#endDTD()
     */
    public void endDTD() throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#startCDATA()
     */
    public void startCDATA() throws SAXException {
    }

    /**
     * @see org.xml.sax.ext.LexicalHandler#startEntity(String)
     */
    public void startEntity(String arg0) throws SAXException {
    }

    /**
     * From XSLTC
     * @see ExtendedContentHandler#startElement(String)
     */
    public void startElement(String elementNamespaceURI, String elementLocalName, String elementName) throws SAXException {
        super.startElement(elementNamespaceURI, elementLocalName, elementName);
    }

    public void startElement(String elementName) throws SAXException {
        super.startElement(elementName);
    }

    /**
     * From XSLTC
     * @see org.xml.sax.ContentHandler#endDocument()
     */
    public void endDocument() throws SAXException {

        flushPending();
        m_saxHandler.endDocument();

        if (m_tracer != null)
            super.fireEndDoc();
    }

    /**
         *
     * @see ExtendedContentHandler#characters(String)
     */
    public void characters(String characters) throws SAXException {
        final int length = characters.length();
        if (length > m_charsBuff.length) {
            m_charsBuff = new char[length * 2 + 1];
        }
        characters.getChars(0, length, m_charsBuff, 0);

        m_saxHandler.characters(m_charsBuff, 0, length);

    }

    /**
         * @see org.xml.sax.ContentHandler#characters(char[], int, int)
     */
    public void characters(char[] characters, int offset, int length) throws SAXException {

        m_saxHandler.characters(characters, offset, length);

        // time to fire off characters event
        if (m_tracer != null)
            super.fireCharEvent(characters, offset, length);
    }

    /**
     * From XSLTC
     */
    public void addAttribute(String name, String value) {
        // do nothing
    }

    public boolean startPrefixMapping(String prefix, String uri, boolean shouldFlush) throws SAXException {
        // no namespace support for HTML
        return false;
    }

    public void startPrefixMapping(String prefix, String uri) throws org.xml.sax.SAXException {
        // no namespace support for HTML
    }

    public void namespaceAfterStartElement(final String prefix, final String uri) throws SAXException {
        // no namespace support for HTML
    }

}
